Goodwill And Other Intangible Assets (Reconciliation Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Apr. 30, 2014
Goodwill [Line Items]
Beginning Balance	$ 165,568
Foreign exchange translation	2,576
Ending Balance	168,144
Engine Products [Member]
Goodwill [Line Items]
Beginning Balance	72,321
Foreign exchange translation	331
Ending Balance	72,652
Industrial Products [Member]
Goodwill [Line Items]
Beginning Balance	93,247
Foreign exchange translation	2,245
Ending Balance	$ 95,492